Trigger player model visual update when online inventory changes

rebuildOnlineInventory() now sets a dirty flag that GameScreen checks
each frame to call updateCharacterGeosets/Textures and loadEquippedWeapons.

include/game/game_handler.hpp

@@ -190,6 +190,7 @@ public:
     // Inventory
     Inventory& getInventory() { return inventory; }
     const Inventory& getInventory() const { return inventory; }
+    bool consumeOnlineEquipmentDirty() { bool d = onlineEquipDirty_; onlineEquipDirty_ = false; return d; }
 
     // Targeting
     void setTarget(uint64_t guid);
@@ -548,6 +549,7 @@ private:
     std::unordered_set<uint32_t> pendingItemQueries_;
     std::array<uint64_t, 23> equipSlotGuids_{};
     std::array<uint64_t, 16> backpackSlotGuids_{};
+    bool onlineEquipDirty_ = false;
 
     // ---- Phase 2: Combat ----
     bool autoAttacking = false;

src/game/game_handler.cpp

@@ -2936,6 +2936,8 @@ void GameHandler::rebuildOnlineInventory() {
         inventory.setBackpackSlot(i, def);
     }
 
+    onlineEquipDirty_ = true;
+
     LOG_DEBUG("Rebuilt online inventory: equip=", [&](){
         int c = 0; for (auto g : equipSlotGuids_) if (g) c++; return c;
     }(), " backpack=", [&](){

src/ui/game_screen.cpp

@@ -104,7 +104,7 @@ void GameScreen::render(game::GameHandler& gameHandler) {
         gameHandler.notifyInventoryChanged();
     }
 
-    if (inventoryScreen.consumeEquipmentDirty()) {
+    if (inventoryScreen.consumeEquipmentDirty() || gameHandler.consumeOnlineEquipmentDirty()) {
         updateCharacterGeosets(gameHandler.getInventory());
         updateCharacterTextures(gameHandler.getInventory());
         core::Application::getInstance().loadEquippedWeapons();